Key-seating machine.



G. J. COSTELLO.

KEY SEATING MACHINE.

APPLICATION FILED SEPT. 11, 1911.

1,038,855, Patented Sept. 17, 1912.

a SHEBTS-SHEBT 1.

INVENTOR a X W COLUMBIA PLANOGRAPH co., WASHINGTON, D. c.

ATTORNEY G. J. COSTELLO.

KEY SEATING MACHINE. APPLICATION FILED SBPT.11, 1911.

Patented Sept. 17, 11912.

3 SHEETS-SHEET 3.

INVENTOR 'Lllll.

WITNESSES ATTORNEY NITED STATES KEY-SEATING MACHINE.

Specification of Letters Patent.

Patented Sept. 1'7, 191a.

Application filed September 11, 1911. Serial No. 648,713.

To all whom it may concern:

Be it known that I, Gnonsn J. COSTELLO, a citizen of the United States, residing in Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Key-Seating Machine, of which the following is a specification.

My invention relates to key-seating machines.

The object is to provide an improved gradual automatic feed of the tool toward the work; improved means for carrying the tool into and out of operative engagement with the work; improved means for effecting a relief motion of the tool from the work and a subsequent feed motion toward the work; means whereby work of various sized bores and shapes can be chucked rapidly and effectively without the aid of wrenches or screws; improved means for connecting the tool to the machine to facilitate its rapid removal or attachment; means for maintaining the tool in the required vertical position and for deflecting the chips, and other details of construction.

My invention comprises means for efiecting the above and other advantageous results.

Referring to the drawings, which illustrate a specific embodiment of my invention as applied to ahand power machine, F igure 1 is a plan view of my device. Fig. 2 is a front elevation. Fig. 3 is a side elevation. Fig. 4 is a section on line 44 of Fig. 2. Fig. 5 is a section on line 55 of Fig. 3. Fig. 6 is a section on line 66 of Fig. 1. Fig. 7 is a section on line 7-7 of Fig. 6. Fig. 8 is a detail of a ratchet and a cooperating pawl. Fig. 9 is a section on line 99 of Fig. 1. Fig. 10 is a detail in perspective of the tool carrying rack bar.

Similar numerals refer to similar parts throughout the several views.

The main housing 15 of the machine is provided with base plate 16 adapted to be bolted to bench 17. Chucking post 18 is secured to the housing 15 by bolts 19. Base plate 20 of the chucking post fits into opening 21 in the top of the housing where it is supported by shoulder 22 of the housing with its upper face flush with the top of said housing. By turning the heads of bolts 19 above the top of base plate 20, the chucking post can be securely fastened to the housing. The chucking post is provided with shoulupo-n opposite sides of the post. Groove 24 extends the entire length of the post and is adapted to accommodate upwardly tapering feed and relief wedge 26 and tool 27, both of which slide freely within the groove, wedge 26 being directly in back of the tool and the adjoining sides of both tool and wedge being perpendicular. Groove 25 extends from the top of post 18 nearly to shoulder 23. This groove is adapted to accommodate securing wedge 28, which is employed to hold the work down firmly upon shoulder 23, in position to be operated upon by tool 27.

29 indicates apiece of work chucked and secured by wedge 28.

Tool 27 is provided at its lower end with shoulder 30 adapted to fit within T-slot groove 31, cuthorizontally in the top end of tool carrying bar or rack 32 and in line with the feed travel of the tool. Opening 64 in housing 15, in line with groove 24 in the chucking post, permits the ready insertion ofthe tool within groove 31. Toolcarrying bar or rack 32 is moved up and down, through base plate 16, by the engagement with the rack of pinion 34 on shaft 35 which is operated by lever 36 or by a hand wheel or any other suitable means. It will be obvious that the movement of the rack will move the tool up and down, toward and away from the work.

Stud 37 is threaded into the free end of pinion 34. This stud extends through openings in the center of hollow friction disk 38 and of washer 39. It is provided with shoulder 80 .whichbears against the outer face of washer 39 to force the inner face of the washer against the end of pinion 34.

Washer 39 is surrounded by disk 38 and is provided on its inner face with flange 41 within which the free end of shaft 35 is adapted to rotate when the friction disk and washer are stationary, as will be explained. Both the friction disk and the washer have suitable interior and exterior tapers respectively, as clearly shown in Fig. 5, to insure a proper engagement between these two elements. face of disk 38 is inclosed by casing 43 which extends from the head 40 of stud 37 to the outer face of the disk. Within this casing is provided the spring 44 which surrounds the stud and operates between the head of the same and extension 42 of disk der 23 and with tapered grooves 24 and 25 lxtenslon 42 of the outer teeth 46 upon the 1 friction disk 47.

38 and, through said disk, forces washer 39 against the end of pinion 34. The outer periphery of friction disk 38 is provided with a small number of teeth 45, three of these teeth being employed in the construction shown in Fig. 3.

of these teeth. It is as provided with four of ratchet wheels 49 mounted upon hub 48 and 50. Hub 48 is rigidly secured to shaft 51 provided with pinion 52 for operating rack 53, connected by toggle pin 54 with feed and relief wedge 26. Hand wheel 56 is mounted upon the outer end of shaft 51 and is secured thereto by a screw or other means. This hand wheel is provided with casing 58 which incloses extension 59 of the outer faceof friction disk 47. WVit-hin casing 58 is provided a suitable spring which operates between the inner face of hand wheel 56 and extension 59 to force friction disk 47 against hub 48. It will be understood that disk 47 and hub 48 have suitable interior and exterior tapers, as in the case of disk 38 and washer 39, to insure a proper engagement between the parts, see

' Fig. 9.

Pawls 60 and 61 are mounted upon pin 74 secured in bracket 55 of housing 15 and are adapted to cooperate with ratchet wheels 49 and 50 respectively, for a purpose to be described. Shield 62 is secured near the top of friction disk47 and extends above ratchet wheels 49 and 50 and beneath pawls 60 and 61 to the rear of the free ends of the same.

' Itwill be noted that although ratchet wheels 49 and 50 are of the same size, wheel. 50 is provided with twice as many teeth as wheel 49. Ratchet 49 and its cobperating pawl 60 are adapted to be employed when cast iron or brass, for example, are to be cut; while ratchet 50 and pawl 61, which cause a more gradual feed of the tool to the work, are adapted to be employed when steel, for example, employed to feed the tool, pawl 60 is turned down upon ratchet 49 and pawl 61 is turned up away from ratchet 50, as shown in Fig. 3. If ratchet 50 is to be employed the operation of the pawls is reversed.

The operation of the cutting tool and of the feed and relief mechanism is as follows :--Upon the rotation of shaft 35 in the clockwise direction, the operation of pinion 34 upon rack 32 causes the downstroke of tool 27, toward work 29. This movement of shaft 35 also causes a limited rocking movement of friction disk 38 and a corresponding rocking movement, in the opposite direction, of friction disk 47; the extent of the rocking movements of the two friction disks being governed by the number and size of the teeth on their outer peripheries.

Disk 47 is shown in Fig. 3

is to be out. If ratchet 49 is to be The movement of friction disk 47 in the counterclockwlse direction causes, through pinion 52 and rack 53, the elevation of feed and relief wedge 26 to move tool 27 horizontally toward the'work, during the tools descent. At the same time, this movement carries shield 62 beneath the free end of whichever pawl is in the operative position and prevents its engagement with its cooperating ratchet. The rotation of shaft 35, with the friction disks stationary, continues until the end vof the downstroke of the tool is reached. Upon the reversal of the movement of shaft 35 to move the tool upward,

an immediate horizontal relief motion of the tool away from the work is effected by t-hedescent'of wedge 26, due to a limited rocking movement of the two friction disks back to their-positions at the commencement of the downstroke of the tool, and the operation of pinion 52 upon rack 53. This return movement of disk 47, to cause the descent of wedge 26, carries shield 62 from beneath the free end of the operative pawl, the pawl slips between the teeth of the ratchet and the ratchet is turned back, independently of disk 47, for one step or more depending .upon the position of the shield relatively to the free end of the pawl. This causes slight upward movement of wedge 26 to move the tool forward toward the work. The rotation of shaft 35, with the friction disks and ratchets again stationary, continues until the end of the upstroke of the tool is reached. It will thus be seen that with each movement of friction disk 47 in the counterclockwise direction, the tool is automatically moved a certain distance horizontally toward the work that with each movement of disk 47 in the clockwise direction,

the tool is automatically moved the same distance horizontally away from the work;

and that with each upward stroke of the tool, it is also given a positive gradual horizontal feed to the work. It will also be 'understcodthat as the adjoining sides of wedge 26 and tool 27 are perpendicular, and as groove 31 is in line with the feed travel of the tool, the cut of the tool will be made perpendicularly.

The preliminary setting of the tool relative to the work, or a non-automatic feed of the tool, can be accomplished by moving the pawls back from the ratchets, turning hand wheel 56 on shaft 51 until the limit of rocking movement of the friction disks is reached, and then turning shaft 51 and pinion52, independently of friction disk 47, to move feed and relief wedge 26- in either direction'until the required adjustment is secured.

As stated above, the tool is held in a T-slot groove 31 in the upper end of tool carrying rack 32. To hold thetool firmly against wedge 26 I provide an inclined spring controlled lever 63 which operates in slot 24 of the chucking post and in slot 64 of the housing. This lever is also adapted to defleet the chips cut from the work. The upper end of lever 63 is beveled on its inner face to permit of its lying fiat against the tool. The lever is mounted upon cam stud 65 which extends transversely through slot 64 and is rotatably mounted in housing 15. The cam stud is provided at one end with a knurledthumb piece 66 and at points adjacent thereto with flat faces 67 and 68. Beneath stud 65 is provided the spring eontrolled plunger 69 operating in casing 70 secured to housing 15. Spring 71 is interposed between shoulder 72 of plunger 69 and the bottom of casing 70. It serves to force the plunger against cam stud 65. By turning stud 65, lever 63 may be moved either toward or away from tool 27. It will be clear that the tension of spring 71 will hold the lever firmly against the tool and that the removal ofthe tool can only be accomplished by turningthe lever over upon point 73 between cam faces 67 and 68, against the tension of spring 71. The tool is thus held firmly in position and may be readily removed by simply bringing rack 82 to the top of its stroke, throwing down lever 63 against the tension of spring 71, and. sliding the tool out of the machine through T-slot 31 and groove 64. The replacement of the tool with a tool of different size is obviously as simple, and the employment of the usual clamping devices is entirely eliminated. It will also be obvious that even if the Work is considerably larger than the diameter of chucking post 18, it may be readily secured thereto bythe employment of a larger securing wedge, and that work of different sizes and shapes can be readily chucked without the aid of wrenches or screws.

hat I claim is 2-- 1. In a keyseating machine, the combina tion of rack and pinion means for reeiproeating the tool, a wedge for moving the tool toward the work, rack and pinion means for reciprocating the wedge, and friction means between the tool reciprocating means and the wedge reciprocating means.

2. In a key-seatingmachine, the combination of rack and pinion means for reclproeating the tool, a wedge for moving the tool toward the work, rack and pinion means for reciprocating the wedge, friction means between the tool reciprocating means and the wedge reciprocating means, for moving the wedge relatively to the tool, and a ratchet, movable independently of the friction means, for causing a relative movement be tween the wedge and the tool.

3. In a key-seating machine, the combination of a removable post, a work'support connected therewith, said post having oppositely disposed tapering grooves therein, one

of said grooves adapted to receive a securing wedge and another of said grooves adapted to receive a feed wedge and a tool, and a pivoted spring controlled lever for ex erting pressure upon the tool..

In a key-seating machine, the combination of a post, a slotted work support connected therewith, said post having oppositely disposed tapering grooves therein, one of said grooves adapted to receive a securin wedge and another of said grooves adapted to receive a feed wedge and a tool, "and a pivoted spring controlled lever for exerting pressure upon the tool.

5. In a key-seating machine, the combination of a slotted chucking post, a slotted housing, a cam stud rotatably mounted in the housing and extending transversely to the slot therein, a lever mounted on said stud and operating in said slot, and a spring controlled. plunger having operative reh ti'onship with the lever and the stud.

6. In a key-seating machine, the combina-, tion of a grooved post, a tool and a feed and relief wedge within said groove, a grooved carrying bar for reciprocating the tool, and means for moving the wedge, the parts being so proportioned and positioned relatively that the line of feed and relief movements of the tool are in line with the groove in the tool carryin bar.

In a key-seating mac iine, the combination of a slotted housing, a slotted post connected therewith with the slots in post and housing in alinement, a tool and a wedge within the post slot, a tool supporting bar provided with a horizontally disposed T slot for engagement with the tool, and a. spring controlled lever operating in the housing slot for forcing the tool against the wedge.

8. In a key-seating machine, the combination of a housing, a shaft and means for. operating the same, a tool operatively connected with said shaft, a stud connected with one end of the shaft, a toothed friction disk between the stud and the shaft, a wedge having operative relationship connected with the tool, means for moving said wedge, a ratchet rigidly connected with said wedge moving means, and a toothed friction disk, adapted to mesh with said first mentioned friction disk, movably connected with the ratchet.

9. In a key-seating machine, the combination of cooperating spring controlled friction elements, means connected with one of said friction elements for causing relative cutting and return movements between the tool and the work, means operated by said first mentioned means and controlled by the operation of another of said friction 'eley ments for causing a relief movement between the tool and the work, and means for causing a gradual automatic feed between the.

tool and the work.

10. In a key-seating machine, the combination of cooperating spring controlled friction elements, actuatlng means therefor adapted to cause relative cutting and return movementsbetween thetool and the work, means controlled by the operation of one of said friction elements for causing a relief movement between the tool and the work, and means for causing a gradual feed between the tool and the work.

11. In a key-seating machine, the combination of cooperating spring controlled friction elements, means operatively connected therewith for causing relative cutting and return movements between the tool and the worln'means operated by one of said fric-' tion elements for causing a relief movement between the tool and the work, and means operatively connected with one of said friction elements for causing a gradual feed between the tool and the work.

12. In a key-seating machine, the combination of a pair of cotiperating friction disks, means connected with one of said disks for causing relative vertical m0vement between the tool and the work, means controlled by the operation of said disks for causing horizontal feed and relief movements between the tool and the work, and means operatively connected with said disks but capable of operation independently thereof for causing a gradual feed between the tool and the work.

13. In a key-seating machine, the combination of a pair of friction disks, means connected with one of said disks for causing relative vertical movement between the tool and the work, means controlled by the o eration of one of said disks for causing orizontal feed and relief movements between the tool and the work, and a pawl and .ratchet'operatively connected with one of said disks for causing a gradual feed between the tool and the work.

14. In a key-seating machine, the combination of cooperating spring controlled friction disks, means connected with one of said disks "for causing relative vertical movement between the tool and the work,

means operated by one of said disks for causing horizontal feed and relief movements between the tool and the work, and means operatively connected with one of said disks for causing a gradual feed between the tooland the work.

15. In a key-seating machine, the combination of a tool, a support therefor and means for reciprocating said support, a movable feed and relief member for cooperating with the tool, means connected with the tool moving means for causing an automatic movement of said member first in one direction and 'then in another, and means connected therewith for causing a gradual autoimatic feed movement of said member.

16. In a key-seating machine, the combination of a tool, a support therefor and means for moving said support, amovable feed and relief member for cooperating with the tool, means connected with the toolmoving'means for moving said member first in one direction and then in another, and means connected with said last mentioned means for causing an independent feed movement of said member. 7

17. Ina key-seating'machine, the combination of a tool,'a support therefor and means for moving said support, a movable feed and relief member for cooperating with the tool, means connected with and operated by the tool moving means for moving said member first in one direction and then in another, a pawl and ratchet operatively connected therewith, and means for at one time preventing operative relationship between the pawl and the ratchet.

18. In a key-seating machine, the combination of an operating shaft, a tool and a friction element connected with said shaft and operated thereby, a wedge, a serrated bar or rack connected therewith, a pinion, a ratchet rigidly connected therewith having a tapering hub, a pawl, and a spring-pressed friction element mounted upon said hub and having operative relationship with the friction element connected with the operating shaft.

19. In a key-seating machine, the combination of an operating shaft, a tool and a friction element connected with said shaft, a movable wedge, a'serrated bar or rack connected therewith, a pinion, a ratchet rigidly connected therewith having a tapering hub, a pawl, a spring-pressed friction element mounted upon said hub and having operative relationship with the friction element connected with the operating shaft, and manually operative means for moving the wedge.

20. In a key-seating machine, the combination of an operating shaft, a reciprocating tool and a friction element connectorwith'said shaft, a wedge, a serrated bar or rack connected therewith, a pinion, a ratchet rigidly connected therewith having a tapering hub, a pawl, a springpressed friction element mounted upon said hub and having operative relationship with the friction ele ment connected with the operating shaft, and manually operative means for moving the wedge, independently of the springpressed friction element.

21. In a key-seating machine, the combination of an operating shaft, a tool and a hollow spring-pressed friction element connected with said shaft and operated thereby, a tapered washer between the friction element and theend of the shaft, awedge, a serrated bar or rack connected therewith, a pinion, a ratchet rigidly connected thereice with having a tapered hub, a pawl, and a spring-pressed friction element mounted upon said hub and having operative relationship with the friction element connected with the operating shaft, said friction elements being so proportioned and positioned relatively that a limited rocking movement is imparted thereto upon the movement of the operating shaft in either direction.

22. In a machine of the character described, a tool and actuating means therefor, means for effecting intermittent feed and relief movements between the tool and the work, and a series of ratchets, operatively connected with said feed and relief means, for effecting a graded positive feed between the tool and the work.

23. In a machine'of the character described, a tool and actuating means therefor,

means for effecting intermittent feed and re lief movements between the tool and the work, means for obtaining a graded positive feed between the tool and the work, and means for controlling said feed.

24. In a machine of the character described, a tool and actuating means therefor, means for effecting a relief movement between the tool and the work, and means, operated by the tool actuating means, for ob taining a graded positive feed between the tool and the work.

GEORGE J. COSTELLO, Witnesses MAE HOFMANN, HOWARD S. OKIE.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. i 

